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Fencer Vulns
medium 6.5

CVE-2023-33129 json

Microsoft SharePoint Server Denial of Service Vulnerability

published 2023-06-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37315

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Microsoft SharePoint Server Denial of Service Vulnerability

Patch / fix

  • Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5400.1001
  • Microsoft Microsoft SharePoint Server 2019 16.0.10399.20005
  • Microsoft Microsoft SharePoint Server Subscription Edition 16.0.16130.20548

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

1.98% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Microsoft Microsoft SharePoint Enterprise Server 2016
  • Microsoft Microsoft SharePoint Server 2019
  • Microsoft Microsoft SharePoint Server Subscription Edition

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.